html, body, form {
    margin:0;
    background-color: #C0C0C0;
    padding:0;
}

#contenedor {
    width: 100%;
    height: 100%;
    margin: 0 auto;
    border: 10px solid #ffffff;
    background-color: #9999FF;
    position: fixed;
}

header {
    width: 100%;
    height: 15%;
    margin-top: 0%;
    position: fixed;
    background: -moz-linear-gradient(top, rgba(0,0,0,0.7) 0%, rgba(0,0,0,0.7) 84%, rgba(0,0,0,0) 100%);
    background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,rgba(0,0,0,0.7)), color-stop(84%,rgba(0,0,0,0.7)), color-stop(100%,rgba(0,0,0,0)));
    filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#b3000000', endColorstr='#00000000', GradientType=0 );
}

#central {
    width: 100%;
    top: 15%;
    background-color: #525866;
    position: fixed;
}

#menulateralizquierdo {
    width: 20%;
    height: 85%;
    margin-left: 0%;
    position: fixed;
}

#contenido {
    width: 60%;
    height: 85%;
    margin-left: 20%;
    border-right: 2px solid #525866;
    border-left: 2px solid #525866;
    display: inline;
    position: fixed;
    overflow: auto;
}

#menulateralderecho {
    width: 20%;
    height: 85%;
    margin-left: 80%;
    position: fixed;
}

audio {
    width: 100%;
    height: 15%;
    position: fixed;
    bottom: 0%;
}

#logo {
    margin-top: -6%;
    margin-left: -1%;
}

#login {
    margin-left: 70%;
    margin-top: 1.5%;
    background-color: transparent;
}

#logged {
    width: 100%;
    text-align: right;
    margin-top: 2.8%;
    color: white;
    font: 120% sans-serif;
    background-color: transparent;
}

.register {
    margin-left: 76%;
    margin-top: 0%;
    color: white;
    font: 80% sans-serif;
}



.login{
    width: 145px;
    background-color: #fff;
    border: 1px solid #bbb;
}

#submit_login{
    width: 101px;
    padding: 0;
    background-color: #bbb;
    border: 1px solid #bbb;
}

input{
    -border-radius: 5px;
    -moz-border-radius: 5px;
    -webkit-border-radius: 5px;
}